Ultrafast Dynamics Group
Frédéric Laquai's Group



We use time-resolved photoluminescence and ultrafast transient absorption spectroscopy to study the charge generation and recombination processes in bulk heterojunction solar cells.​​​​
We investigate the efficiency-limiting processes in organometallic halide perovskite devices
We study these processes in solution-processed polymer and small molecule solar cells by various time-resolved optical and electro-optical techniques
We study the photophysics of non-fullerene acceptors in BHJ devices to better understand the efficiency-limiting processes compared to fullerene derivatives.


Method Development

Gaining novel insight into the photophysics of solar cells often requires the development of new or the advancement of established spectroscopic techniques and data analyses methods.​